Index: server/src/cachecleaner.h
===================================================================
--- server/src/cachecleaner.h	(revision 915886)
+++ server/src/cachecleaner.h	(working copy)
@@ -46,6 +46,10 @@
   private slots:
     void cleanCache();
 
+  private:
+    short int mTime;
+    qint64 mLoops;
+
 };
 
 }
Index: server/src/cachecleaner.cpp
===================================================================
--- server/src/cachecleaner.cpp	(revision 915886)
+++ server/src/cachecleaner.cpp	(working copy)
@@ -29,6 +29,8 @@
 CacheCleaner::CacheCleaner(QObject * parent) :
     QThread( parent )
 {
+  mTime = 60; 
+  mLoops = 0;
 }
 
 CacheCleaner::~CacheCleaner()
@@ -38,14 +40,14 @@
 void CacheCleaner::run()
 {
   DataStore::self();
-  QTimer::singleShot( 60 * 1000, this, SLOT(cleanCache()) );
+  QTimer::singleShot( mTime * 1000, this, SLOT(cleanCache()) );
   exec();
   DataStore::self()->close();
 }
 
 void CacheCleaner::cleanCache()
 {
-
+  qint64 LoopsWithExpiredItem = 0;
   // cycle over all collection
   QList<Collection> collections = Collection::retrieveAll();
   foreach ( Collection collection, collections ) {
@@ -83,9 +85,20 @@
       if ( !parts[ i ].update() )
         qDebug() << "failed to update item part" << parts[ i ].id();
     }
+    LoopsWithExpiredItem++;
   }
 
-  QTimer::singleShot( 60 * 1000, this, SLOT(cleanCache()) );
+  if( mLoops < LoopsWithExpiredItem) {
+    if( mTime > 60)
+      mTime -= 60;
+  } else {
+    if( mTime < 600)
+      mTime +=60;
+  }
+
+  mLoops = (LoopsWithExpiredItem + mLoops) >> 2;
+     
+  QTimer::singleShot( mTime * 1000, this, SLOT(cleanCache()) );
 }
 
 #include "cachecleaner.moc"